This breezy, engaging book does not explicitly attempt biography; instead journalist Abramsky dissects the personality of Barack Obama, examining the qualities—focus, self-confidence and curiosity—that fueled his meteoric rise. The book, the fifth in this series, draws on an impressive number of interviews with Obama's friends and associates—though not one with the president himself—and includes illuminating anecdotes from every phase of the president's life. Case studies of the Iowa caucus, the Rev. Jeremiah Wright controversy and the appointment of Hillary Clinton as secretary of state bring the book's arguments into focus. Abramsky does little to conceal his enthusiasm for Obama, comparing him repeatedly to Lincoln and Kennedy and labeling him a potential “once-in-a-generation leader.” Skeptics are likely to find the author's praise off-putting (he includes dissenting views but generally dismisses them). None of the book's insights are revelatory—for example, Obama's poise and calm under pressure have been fodder for journalists and talking heads since the primaries began—but supporters are likely to enjoy the book's concision and fresh approach to familiar material. (Dec.)